I have a maybe somewhat unusual question.There is a super simple circuit that enables an LED to be powered by ringing mobile phone. Can be found at http://www.creative-science.org.uk/mobile_LED_simple.html What I would like to do is to power LED but from a distance, preferably Radio Stations of (if possible) power lines. LED does not have to be constantly on or bright, it can "blink". I was looking at Joule Thief and combining it with capacitor ...
The point is that there should be no battery. Is such a thing possible?
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